MUMBAI, India, May 2 -- Intellectual Property India has published a patent application (202547033859 A) filed by Koninklijke Philips N. V., Eindhoven, Netherlands, on April 7, for 'photoplethysmography signal extraction.'

Inventor(s) include Den Brinker Albertus Cornelis; Wuelbern Jan Hendrik; Weiss Steffen; and Pappous Ioannis.

The application for the patent was published on May 2, under issue no. 18/2025.

According to the abstract released by the Intellectual Property India: "A device (10) and method are disclosed for use in camera based photoplethysmography. The device comprises an input (11) for camera images and a subset generator (12) to divide an image region where a tissue of interest is presumed to be present into a first plural...